Frequency and number of electrons ejected

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Claire Lo 3C
Posts: 55
Joined: Sat Aug 17, 2019 12:18 am

Frequency and number of electrons ejected

Postby Claire Lo 3C » Fri Nov 08, 2019 3:16 pm

I know that to emit an electron, the photon has to reach a specific frequency. Is it true that the frequency of the photon has to double in order to emit the second electron?

Maia_Jackson_2C
Posts: 81
Joined: Fri Aug 30, 2019 12:17 am

Re: Frequency and number of electrons ejected

Postby Maia_Jackson_2C » Fri Nov 08, 2019 4:49 pm

I'm not entirely sure but this seems correct because if one photon needs a certain amount of energy to emit one electron, then the next photon would need that same amount of energy to emit the next electron, making the total energy double in the end.

Reagan Smith 1H
Posts: 50
Joined: Sat Jul 20, 2019 12:16 am

Re: Frequency and number of electrons ejected

Postby Reagan Smith 1H » Fri Nov 08, 2019 5:39 pm

No, increasing frequency of the light does not change the number of electrons ejected from a metal surface. Once the minimum frequency required to eject an electron is met, other electrons will be ejected as long as the frequency stays at that threshold level or above it. In order to eject more electrons, the intensity would need to increase in order for the light to admit more photons to interact with the electrons.


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